Going penang for 3 days, want to get a sim card and use as hotspot with my XM spare phone. Should I get it at their airport or should I purchase in SG? Just require at least 2gb for the 3 days.
You can get it at Penang airport when you reach, but I believe those are dealers and there's a chance you'll have to pay more than the published price for one reason or other.
The only one, as far as I know, that you can get here in SG, brand new SIM pack and registered in your name is the OneXOX which is an MNVO riding on Celcom network. There's a dealer in the Travel Bazaar here in HWZ.
Or you can make an effort to head to JB City Square which is within short walking distance from JB CIQ to get the Hotlink Fast at published price of RM10. Or the Maxis shop in Sutera Mall too, though further up after Bukit Indah.
With the Hotlink Fast, you'll be able to get your data needs FOC if at least 1 of those 3 days falls on a weekend.
https://www.hotlink.com.my/en/plans/fast.html